<?php
class Model_PaypalCartInfo extends Model_Base {
   protected $_pk = 'id';
   protected $_fields = array(
      'id', 
      'txnid', 
      'itemname', 
      'itemnumber', 
      'os0', 
      'on0', 
      'os1', 
      'on1', 
      'quantity', 
      'invoice', 
      'custom'
   );
   protected $_table = 'paypal_cart_info';
}